#ff400a

Color #ff400a

A vivid, highly saturated medium red.

Closest named color Orange Red #ff4500 · ΔE 2.9 Nearest Tailwind class orange-600 #f54900 · ΔE 2.7

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Conversions

HEX

#ff400a

RGB

rgb(255, 64, 10)

HSL

hsl(13.2, 100%, 52%)

HSV / HSB

hsv(13.2, 96.1%, 100%)

CMYK

cmyk(0%, 74.9%, 96.1%, 0%)

LAB

lab(57.03, 69.44, 66.65)

LCH

lch(57.03, 96.25, 43.83)

OKLCH

oklch(65.6%, 0.2323, 33.98)

HWB

hwb(13.2, 3.9%, 0%)

Harmony colors

Complementary

#0ac9ff

Analogous

#ff0a4f

#ff400a

#ffba0a

Triadic

#ff400a

#0aff40

#400aff

Split-complementary

#ff400a

#0affba

#0a4fff

Tetradic

#ff400a

#c9ff0a

#0ac9ff

#400aff

Square

#ff400a

#4fff0a

#0ac9ff

#ba0aff

Shades

Color #ff400a mixed toward black.

#dd3100

#b12700

#851d00

#581300

#2c0a00

Tints

Color #ff400a mixed toward white.

#ff6033

#ff805c

#ffa085

#ffbfad

#ffdfd6

Tones

Color #ff400a mixed toward gray.

#eb4b1f

#d65733

#c26247

#ad6e5c

#997970

Accessibility

Aa White text on this color

3.51:1

Aa Black text on this color

5.99:1

Black text reads better on this background (5.99:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#cac820 · ΔE 51.1

Deuteranopia

#d2dc24 · ΔE 56.1

Tritanopia

#fa2b2d · ΔE 7.9

Achromatopsia

#898989 · ΔE 30.4

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #ff400a;

Tailwind (arbitrary value)

bg-[#ff400a]

Related colors

Dark Salmon #e9967a

Coral #ff7f50

Orange Red #ff4500

Light Salmon #ffa07a

Tomato #ff6347

Sienna #a0522d

Frequently asked questions

#ff400a (#ff400a) is rgb(255, 64, 10) in RGB.

No, #ff400a is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #ff400a, or check how it holds up for accessibility.

Generate a palette → Check contrast